diff --git a/Gemfile b/Gemfile
index 6d6fb6ab5..6c15dc75e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -159,7 +159,7 @@ group :development, :test do
   # system specs
   gem "capybara", "~> 3.30"
   gem "launchy", "~> 2.5" # For auto-opening capybara html file
-  gem "puma", "~> 6.0"
+  gem "puma", "~> 6.4"
   gem "selenium-webdriver", "~> 4.15.0" # TODO: Can't upgrade to 4.17 until Rails 7 + Ruby 3.3
 
   # Debugging
diff --git a/Gemfile.lock b/Gemfile.lock
index b8e9aa9cd..3bcb1973d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -402,7 +402,7 @@ GEM
     psych (5.1.2)
       stringio
     public_suffix (6.0.1)
-    puma (6.4.2)
+    puma (6.4.3)
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (3.1.7)
@@ -736,7 +736,7 @@ DEPENDENCIES
   pry (~> 0.13)
   pry-byebug (~> 3.9)
   pry-rails (~> 0.3)
-  puma (~> 6.0)
+  puma (~> 6.4)
   rack-attack (~> 6.3)
   rails (~> 7.1.0)
   rails-backbone!